RamAir972003

Is that peak.

KLLRVET

Here is my experience :

http://forums.corvetteforum.com/c6-z...s-it-work.html

sky1

My z dynoed at 428rwhp. I had mti racing do a stage 1 . I had a fast intake and nw tb and tri y headers. Then I had mti racing retune my z and it has 515rwhp. I gained 87rwhp with bolt ons and a tune. It also has 487 ft lbs of torque. The throttle response is sick .

FNBADAZ06

Peak gains ? Probably 15/15 at peak power, which I'm going to guess by your current numbers is somewhere around 6600-6700 RPM ?

But where the FAST REALLY shines is in the mid-range, where you might be up 25/25+ between 4000-5200 RPM

I know my car has full mods now, but just look at the torque curve I have now. I switched it from RPM to MPH to just to show you what I'm talking about.

Stock, my car made 400 lbs/ft at 70 MPH in 4th gear dyno pull....it's the blue trace on the dyno chart.

Now, I make that SAME amount of torque somewhere around 35 MPH in 4th gear....and you can clearly see the torque bulge between 100-110 MPH, where I'm up 100 lbs/ft !!!!! Peak power is cool, but my torque curve is where you'll normally drive the car......and I'll tell you know, it's crazy having that much torque N/A.

'06 Quicksilver Z06

I have a ported stocker, ported stock throttle body, and the reset of my mods in my signature, and have been on the fence about the FAST after seeing Charlie's comparison here.

http://forums.corvetteforum.com/c6-z...2-results.html

When you get done with the fuel rails, the injectors if you need them, mine are at 84% DC at WOT, and porting the FAST, additional tuning, especially when the car is running great now, add all of that up and I'm asking myself, if it is worth it for those type of gains, over my ported stocker and ported stock throttle body.

Good thread.

FNBADAZ06

Ask Mike AZZ061 what the torque difference feels like between our two cars. You don't need to port the FAST unless you're going gigantic cam and need the airflow up top. Is the extra 25+ lbs/ft of mid-range power worth it on a street car, given the $1K+ investment ? I say emphatically, yes.

Fifedogg

I'll be going from a ported LS7 to a Ported Fast 102 and NW 102 TB tomorrow. I feel the Torque under the curve is worth the money. If I can get my tuner to do a before and after dyno I will post results. I feel it should be a nice improvement on my H/C Z.

KING_PIN6

What you will get from torque under curve ???

If you are going to use the car as daily driver (street use No track)??????

Whats the benefits????

adamgl

Nice graph!

yellowzron

Wow if you gained that much, 87rwhp, you got really lucky or a really good car. Numbers will always be different but to go from 428 to 515 is amazing.

My Z dynod 456 bone stock. I did a tune a kn cai and it went to 488. Then I did a cam it went to 531. Then I did the ported fast 102 with a fast tb and a snake charmer cai the car went to 550 to the wheels. So with the ported fast intake the fast tb and the snake charmer I picked up about 18. Was it worth the money not really but we all have our z06 passion. American racing headers going on tue so I will post what numbers I gained with them.

FNBADAZ06

Thanks

Trying to impress upon other members what this"under the curve" torque thing is all about can be difficult......but the MPH graph above should have taken care of that

Too many owners put way to much emphasis on peak power numbers, and completely ignore the torque curves where they do most of their driving.

azZ06Mike

Victor Fnbadaz06 also has milled heads and on E85. His car is very responsive and torquey but he also has the Katech 110 old torque cam and milled heads. Couple these things together he has a nicely built torque monster.

Personally I am not spending the money now on the FAST and the TB. To me 15-20 rwhp or torque is not worth the $1700.00 plus dollars for their items. I guess it's a preference but for that kind of money I could buy a larger cam and pushrods or buy a nitrous system and have far better gains.

And I have no Faith in Fast fuel rails based on some recent history here in Arizona!

yellowzron

To me 15-20 rwhp or torque is not worth the $1700.00



I totally agree on this statement but I am a dumb azz and did it anyway. I had to. I got the bug and did it. A fool and his Z06 is me.

adamgl

I wonder if a mph graph like that would work with a 1st through 5th gear pull? To show the torque multiplication and what you put down in each gear.

FNBADAZ06

Sure, it would.....but it's much simpler than that.
4th gear is 1:1 , so that's the reason you dyno the Z06 in that gear....no transmission multiplication is involved.

If you know the transmission gear ratio's, you simply mulitply the torque readings you get when in the 1:1 ratio in the graph, by the transmission ratio you're looking at.

First gear:
2.66

Second gear:
1.78

Third gear:
1.30

Fourth gear:
1.00

Fifth gear:
0.74

Sixth gear:
0.50

Final drive ratio:
3.42

Max MPH per gear for me when running on a slightly taller 335-345/30/19 tire and running to 7000 RPM is approximately 62, 94, 126, 164......I haven't had a chance to top out 5th

FNBADAZ06

That's true, Mike......but the principles are still the same. The torque and HP gains are not linear....you can look at any FAST dyno chart and see that same bulge, regardless of the additional mods. My car put's out a rediculous amount of torque because of the combination of parts, but, I'm willing to bet that if you had a FAST on your car and you pulled it off for a ported OEM LS7, you'd immediately put the FAST back on.

I know you're tired of me saying the word torque, but it's what you're feeling when you first punch the throttle and the car accelerates.

FYI....you don't need the NW102 TB.

azZ06Mike

No thanks I will keep my $1000.00 and be just fine with my ported LS7. To me not worth the money for the minor gains.

I saw a nice comparison last night on Speed Channel where a car with less HP and more torque won a race in the 1/8th mile but then lost in the 1/4 mile to the guy with less torque and more HP.

I know you think your car is the baddest thing since me getting kicked off the local corvette forum because I hate old man crybaby's. But I do not think your throttle response is largely because of your Fast or TB. The 110 cam and the bumped compression are a majority portion of why your car has a ton of torque and good throttle response. I bet if I bumped my compression like yours with the ported ls7 I would have numbers almost identical on a different cam.
you only made 10 rwhp more and 37 torque and I know I would be close.

FNBADAZ06

Whoa....the "baddest thing " ???? Hardly.......and I'm not talking about the throttle response, either. The conversation was is the FAST manifold worth the investment. Yes, the bump in compression, the 110 "Torquer" cam, and my switch to E85, all have an impact on my torque production. The compression bump also had an effect on my throttle response across the board....the NW 102 has more of an impact on throttle response as the RPMs rise. The minor differences in our cam specs just dictate's where the engine's power band is going to be.

1/4 drag racing is all about HP and RPM, and many sacrifice the mid range and civil street manners in quest of ever higher peak HP numbers to obtain that ultimate ET. As Vin Diesel says, if you "live your life a 1/4 mile at a time" , put the biggest cam in that you can and the steepest gear you can tolerate, and let her rip.

azZ06Mike

Did you really use Vin Diesel for logic???? Oh my I need to get you away from the TV!

FNBADAZ06

I was waiting for the "torque pulls trailers, but HP wins drag races" statement